Specs and discussion
Busting out the specs first.
| Enermax REVOLUTION 85+ | |
|---|---|
| Rated output power | 850W @ up to 50°C |
| Power specification | ATX12V 2.3/EPS12 v2.92 |
| Power switch | Yes |
| Efficiency | 85% @ wide load |
| 80 PLUS certification | Silver |
| Input voltage (AC) | Auto-ranging 100-264v, 47-63Hz |
| Fan(s) | 1 x 135mm (700-1,500rpm) |
| Operating temperature range | 0-50°C |
| Cable runs (pre-attached) |
24-pin EATX (split) (12V1) EPS 8-pin (12V2) EPS 8-pin (4p+4p) (12V2) 1 x 6+2 PEG (12V3) Fan cable |
| Cable runs (modular, flat) | 2 x 6+2 PEG (12V5 ) 2 x 6+2 PEG (12V5 or 6)
|
| Max. currents |
+3.3V: 25A |
| Max combined 3.3V & 5V output | N/A |
| Dimension (W x H x L) | 150 x 86 x 190mm |
| Warranty | 3-year, limited |
| Price | £183.99 |
Analysis
The REVOLUTION 85+ is rated up to 850W with an ambient temperature of 50°C, matching other high-quality PSUs, and the company had a sample running at an ambient 65.9°C at this year's COMPUTEX show. Should a sudden power-requirement surge occur, the unit can run at 1,020W for a short period.
A single 13.5cm fan keeps the unit cool, spinning at a maximum of 1,500rpm at full load, but we expect it to hum along at less than 1,000rpm at most times.
Efficiency is excellent for a PSU in its class, ranging from 85 per cent to 91 per cent over a wide load - 20 per cent to 100 per cent - and the 850W has passed the 80 PLUS Silver specification.
Modular in nature, there's the usual gaggle of pre-attached cabling, including 24-pin power, dual 8-pin for the CPU, including servers, and a couple of 6+2 PEGs for graphics. The rest of the connectors are split, sensibly, over the various lines.
Enermax has opted for a six-rail 12V design, and the unit pushes out an impressive 70A (840W) on the combined rails, with each able to handle 30A - although not concurrently, of course. Each rail has over-current protection from 34-45A, too. Like most PSUs these days, it's very heavy on the 12V line, making up almost 99 per cent of the available power. Indeed, Enermax labels this as a feature.
The dimensions of the PSU indicate that it should fit in most chassis and its suitably high-end origins are revealed with an etail price of £184 - making it one of the most expensive sub-1kW PSUs on the market.
The REVOLUTION 85+ is rated up to 850W with an ambient temperature of 50°C, matching other high-quality PSUs, and the company had a sample running at an ambient 65.9°C at this year's COMPUTEX show. Should a sudden power-requirement surge occur, the unit can run at 1,020W for a short period.
A single 13.5cm fan keeps the unit cool, spinning at a maximum of 1,500rpm at full load, but we expect it to hum along at less than 1,000rpm at most times.
Efficiency is excellent for a PSU in its class, ranging from 85 per cent to 91 per cent over a wide load - 20 per cent to 100 per cent - and the 850W has passed the 80 PLUS Silver specification.
Modular in nature, there's the usual gaggle of pre-attached cabling, including 24-pin power, dual 8-pin for the CPU, including servers, and a couple of 6+2 PEGs for graphics. The rest of the connectors are split, sensibly, over the various lines.
Enermax has opted for a six-rail 12V design, and the unit pushes out an impressive 70A (840W) on the combined rails, with each able to handle 30A - although not concurrently, of course. Each rail has over-current protection from 34-45A, too. Like most PSUs these days, it's very heavy on the 12V line, making up almost 99 per cent of the available power. Indeed, Enermax labels this as a feature.
The dimensions of the PSU indicate that it should fit in most chassis and its suitably high-end origins are revealed with an etail price of £184 - making it one of the most expensive sub-1kW PSUs on the market.
